Rockwell chapman



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TO ALL WHOM IT- MAY eoucnnu:

Be it known that I, RQOI W ELL CHAPMAN, of ]3uchanan,.in the county of 'Berrien, andpState oi Michigan, have invented ccrtainn'ew and usefullmprovemcnts inWater-Wheels; andldo hereby declare thatthe' following is a full, clear, and exactfdescription thereofi refere nce being had to the accompanying drawings, making part of this specification, and to theletters of reference marked'thereon, like letters indicating like parts wher ever theyoccur. v

I To enable others skilled in'the art to construct and use my invention, I will proceed to deseribeit. My-inveution consists in a novel manner of constructing a water-wheel, as hereinafter described.

lfigure 1 is a front elevation, and

Figure 2e side plan view.

' My present inventionvrelates to certain improvements in that-class of wheels denominated reaction-wheels, I

and in its general construction resembles the wheel on which apatent was recently granted to me.

To construct my imp'roved. wheel, I first mak'ea circular hub, A, having the main portion of the wheel jectin radially'theretrorn a distance equal tothe depth that it is intended to have the buckets, as repre sented by-B. I then form buckets thereinbye'utting vertically from the surface toward the-eent e,-thej outer face oi the bucket extending half way across the face of the portion B, the outer face of the bucket-growing, gradually'narrower as it extends inward toward the hub'A, its inner line forming an-angle of'about forty five degrees to the outer side of the wheel, and running entirely out to the side as it arrives atethe line'of the hub,

as sho'wh'in' 'fig. 2, the inner side of thecut being curved;and inclined, asrepresented. To: the sides-of the projecting part B of the wheel, metal plates, Z, are then attached, said plates being of such a' size as'to reach fromipn'oof the buckets a, past the next bucket,'.andhali' way to the third. These plates arecurved laterally along their centre, so that when lapped one over the other, as they necessarily are, when applied to the sides of B, the curved portions form achannel for the escape of the water, the line of: the channel thus-formedbeing indicated by the lines m and n of fig. 1, the mouth of the channel terminating on the outside at e and extending back to the bucket a. The buckets are so formed in the part B as to alternate, those on one side standing intermediate between those on the opposite side, as shown clearly in fig. 2. The wheel when'thus forined is enclosed in a case having openings in the sides corresponding with the size of the part Rsaid case fitting close around the edge of the plates Zon each edge of B. The water entering the case, strikes against the vertical face of the buckets a, and after expending its foree'against the bucket, escapes thence through the channel between the plates Z, escaping at the mouth 6 outside of the case.

Having thus described my invention, what .I claim, is

A water-wheel consisting of the radially-projecting hub B, having the buckets a formed therein alternately on opposite sides, each bucket extending halfway across the face of B, as shown in fig. 2, and having the discharge-passages formed on thesides by the overlapping plates 1, applied as described.

I ROCKWELL i CHAPMAN.

mark.

Witnesses:

, WM. F. MULSBERRY, GEO. II. 'Rleimnns. 

